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Solutions For 9780077416119 Chapter 13 Problem 2A

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Solution 1

The second view seems more probable. The only virus disease that has been eliminated has been small pox and only after extensive and wide-spread immunization of all susceptible human populations. On the other hand, even with extensive immunization,  there will always be susceptible populations to a virus disease so that the viruses can spread and continue to survive in the population.

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Solutions For Problems in Chapter 13